Originally Posted by DrewP
I fish around with the hooked end of a welding rod or a coat hanger thru the oil drain plug when I first change the oil and see if I get any bits...
I like this idea.
Also, has anyone ever come across a T7 car that had bad sludge but a quiet motor and no oil pressure light coming on? Another kinda crappy test you can do is try to bring the idle down with the clutch engagement while holding the brake on. If the oil pressure light starts to flicker before the engine actually stalls, you may be in for some low oil pressure. Of course, only manual cars.